1321332143 has 8 divisors (see below), whose sum is σ = 1391689200. Its totient is φ = 1251056448.

The previous prime is 1321332119. The next prime is 1321332151. The reversal of 1321332143 is 3412331231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321332143 - 2¹⁶ = 1321266607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321332043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14555 + ... + 53427.

It is an arithmetic number, because the mean of its divisors is an integer number (173961150).

Almost surely, 2^1321332143 is an apocalyptic number.

1321332143 is a deficient number, since it is larger than the sum of its proper divisors (70357057).

1321332143 is a wasteful number, since it uses less digits than its factorization.

1321332143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40681.

The product of its digits is 1296, while the sum is 23.

The square root of 1321332143 is about 36350.1326407484. The cubic root of 1321332143 is about 1097.3302039265.

Adding to 1321332143 its reverse (3412331231), we get a palindrome (4733663374).

The spelling of 1321332143 in words is "one billion, three hundred twenty-one million, three hundred thirty-two thousand, one hundred forty-three".